JNTU
JNTU B.Tech IV Year MICRO IRRIGATION ENGINEERING Previous Question Paper (November/December - 2018 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What are the adaptabilities of the sprinkler irrigation?
Answer
Sprinkler irrigation is highly adaptable to sandy or light-textured soils with high infiltration rates, undulating topography where land leveling is impractical, and areas with water scarcity where high application efficiency is required.
Write about the desiliting basins in sprinkler irrigation system.
Answer
Desilting basins are settling tanks installed at the head of a sprinkler system to remove suspended sediments, sand, and debris from surface water sources. By reducing the sediment load, they prevent the clogging of sprinkler nozzles and minimize wear on pump impellers and pipe fittings.
Explain the effect of wind velocity on sprinkler irrigation system.
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Discuss inventory of resources of sprinkler irrigation system.
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What are the advantages of drip irrigation system?
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What a short note on maintenance of filters in the drip irrigation system?
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What is crop water requirement?
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Explain the procedure for the design of economic pipe selection.
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Describe the Automation of drip irrigation systems.
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Write a short note on acid treatment in a drip irrigation system.
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Part B
List out all advantages of sprinkler irrigation system over other methods of irrigation water application?
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Explain the components of sprinkler irrigation system with a neat sketch.
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Describe the global and Indian scenario of sprinkler irrigation system.
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Write short notes on: i) Debris Screens and ii) Fertigation equipment.
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The data obtained from a field test on determining the water distribution pattern of a sprinkler is given below. Sprinkler: 7.10 × 4.76 mm - 95.76 L/M, 4.22 kg/cm2. Spacing: 18.2 × 18.2 m. Wind: 3.86 km/hr from the south-east. Humidity: 36%. Time of test: 1 hour. Determine the Christiansen Uniformity Coefficient.
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Determine the discharge of sprinkler head, if diameter of smaller and bigger nozzles is 5 and 4.1 mm respectively. The operating pressure is 2.5 kg/cm2. Take discharge coefficient for bigger and smaller nozzle as 0.9 and 0.8 respectively.
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Determine the total pumping head for a drip irrigation system on a level land. The average operating pressure at the nozzle is 2.5 kg/cm2. The friction loss in the main is 5 m and in the lateral is 3 m, the drawdown of the well is 4 m at the required discharge of 12 lps, the riser height is 2 m and the friction loss in all values and fittings is 4 m. Determine the horsepower requirements of the pump if it operates at 60% efficiency. Determine the energy cost for operating the system for 500 hrs in a year when the unit cost of electricity is Rs.4.00.
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Explain about different components of drip irrigation system.
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Explain about equipment for fertilizer injection in drip irrigation system.
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Explain about different types of emitters in drip irrigation system.
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Explain the relation between pressure and discharge of a dripper.
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Discharge of drip emitters in lph along the lateral line placed at 3 m interval are as follows 4.3, 4.0, 3.8, 3.9, 3.4, 3.7, 4.2, 4.4, 3.5 and 4.1. Determine the emission uniformity if the manufactures coefficient of variation is 0.05.
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What are the common causes for clogging of drippers?
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List the step by step procedure required to test drip irrigation systems after their installation.
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Describe the real time feedback system in drip irrigation system.
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